Dictionary comprehension with condition in Python - Mini Project: Build & Apply

Dictionary Comprehension with Condition

📖 Scenario: You are managing a small bookstore's inventory. You have a list of books with their prices. You want to create a new dictionary that only includes books priced below a certain amount to plan a discount sale.

🎯 Goal: Build a dictionary comprehension with a condition to filter books priced below a set threshold.

📋 What You'll Learn

Create a dictionary called books with given book titles and prices.

Create a variable called max_price to set the price limit.

Use a dictionary comprehension with a condition to create a new dictionary called discount_books with books priced less than max_price.

Print the discount_books dictionary.

💡 Why This Matters

🌍 Real World

Filtering products or items based on price or other conditions is common in online stores and inventory management.

💼 Career

Knowing how to filter dictionaries efficiently helps in data processing, reporting, and building features like price filters in apps.

1

Create the books dictionary

Create a dictionary called books with these exact entries: 'Python Basics': 45, 'Data Science 101': 60, 'Machine Learning': 55, 'Deep Learning': 70, 'AI for Beginners': 40.

Python

# Create the books dictionary with given titles and prices
# Your code here

Need a hint?

Use curly braces {} to create a dictionary with keys as book titles and values as prices.

2

Set the maximum price

Create a variable called max_price and set it to 50.

Python

books = {'Python Basics': 45, 'Data Science 101': 60, 'Machine Learning': 55, 'Deep Learning': 70, 'AI for Beginners': 40}
# Set max_price to 50
# Your code here

Need a hint?

Just assign the number 50 to the variable max_price.

3

Create filtered dictionary with comprehension

Use a dictionary comprehension to create a new dictionary called discount_books that includes only the books from books with prices less than max_price. Use for title, price in books.items() in your comprehension.

Python

books = {'Python Basics': 45, 'Data Science 101': 60, 'Machine Learning': 55, 'Deep Learning': 70, 'AI for Beginners': 40}
max_price = 50
# Create discount_books dictionary with comprehension and condition
# Your code here

Need a hint?

Use the format {key: value for key, value in dictionary.items() if condition} to filter.

4

Print the filtered dictionary

Print the discount_books dictionary using print(discount_books).

Python

books = {'Python Basics': 45, 'Data Science 101': 60, 'Machine Learning': 55, 'Deep Learning': 70, 'AI for Beginners': 40}
max_price = 50
discount_books = {title: price for title, price in books.items() if price < max_price}
# Print the discount_books dictionary
# Your code here

Need a hint?

Use the print function to show the dictionary on the screen.